2191899048 has 32 divisors (see below), whose sum is σ = 5512570560. Its totient is φ = 726256640.

The previous prime is 2191899043. The next prime is 2191899049. The reversal of 2191899048 is 8409981912.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2191899043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269433 + ... + 277448.

It is an arithmetic number, because the mean of its divisors is an integer number (172267830).

Almost surely, 2^2191899048 is an apocalyptic number.

It is an amenable number.

2191899048 is an abundant number, since it is smaller than the sum of its proper divisors (3320671512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2191899048 is a wasteful number, since it uses less digits than its factorization.

2191899048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547057 (or 547053 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 51.

The square root of 2191899048 is about 46817.7215165369. The cubic root of 2191899048 is about 1298.9931154115.

The spelling of 2191899048 in words is "two billion, one hundred ninety-one million, eight hundred ninety-nine thousand, forty-eight".